Dr. William D. Armstrong, DO
- Medicare services, 2024
- 3,120
- Medicare patients, 2024
- 2,463
- Part D claims, 2024
- 32
- MIPS score, 2024
- 91
- Hospital affiliations
- 4
- Practice address
- 2100 Hwy 61 N, Vicksburg, MS 39183
- Practice phone
- Call (601) 883-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Armstrong's professional email, personal email and mobile number
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Dr. William D. Armstrong is a diagnostic radiologist in Vicksburg, Mississippi
Dr. Armstrong practices at Merit Health River Region in Vicksburg, Mississippi, part of Community Health Systems.
Dr. Armstrong's NPI, 1770564411, was assigned on November 9, 2005. Dr. Armstrong graduated from West Virginia School of Osteopathic Medicine in 1987. Dr. Armstrong holds Mississippi license 13721.
- NPI
- 1770564411NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7810947926
- NPI enumeration date
- November 9, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (601) 883-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 65
- Medical school graduation
- 1987
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William D. Armstrong practices at Merit Health River Region in Vicksburg, Mississippi
Dr. Armstrong's primary practice is Merit Health River Region, at 2100 Hwy 61 N, Vicksburg, MS 39183 in Warren County. The practice phone is (601) 883-5000.
- Merit Health River Region2100 Hwy 61 N, Vicksburg, MS 39183 · Warren CountyPhone(601) 883-5000
Source: Dmand AI Affiliation Data
Dr. William D. Armstrong is affiliated with 5 sites of care and 2 medical groups
Dr. Armstrong's primary practice is Merit Health River Region in Vicksburg, Mississippi, part of Community Health Systems. Dr. Armstrong is also affiliated with FMOL Health | St. Dominic. The medical group on file is Lakeland Radiologists, P.A. Dmand AI also links Dr. Armstrong to 2 more hospitals, 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. William D. Armstrong's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Armstrong practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Merit Health River Region | Available with a free account |
| +4 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. William D. Armstrong is one of 201 diagnostic radiologists in Mississippi
Diagnostic radiology is Dr. Armstrong's primary specialty in the NPI Registry, under taxonomy code 2085R0202X. Dr. Armstrong is licensed in Mississippi.
Specialties and state licenses
- Diagnostic radiology, MississippiPrimary
Diagnostic radiologists near Dr. Armstrong
Counts of diagnostic radiologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. William D. Armstrong billed Medicare for 3,120 services in 2024
CMS data shows 3,120 Medicare services from Dr. Armstrong across 52 procedure codes in 2024, for 2,463 Medicare patients. Medicare paid $87,064 for them.
Dr. Armstrong's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 2,8032024: 2,6904%
- Tests and treatments
- 2023: 4582024: 23050%
- Surgery
- 2023: 1732024: 15510%
- Other services
- 2023: 02024: 45
Where Dr. Armstrong's Medicare services took place, 2024
- In an office301%
- In a facility3,09099%
Dr. Armstrong compared with the Mississippi median for diagnostic radiologists, 2024
- Dr. Armstrong
- Mississippi median
- Medicare services
- 3,120vs 4,53731% below
- Medicare patients
- 2,463vs 2,88515% below
- Part D claims
- 30vs 142.1 times
Medians across 196 diagnostic radiologists in Mississippi with Dmand AI profiles that report each measure.
Dr. Armstrong's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Armstrong?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Armstrong and other diagnostic radiologists in Mississippi.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William D. Armstrong treated 2,463 Medicare patients in 2024, average age 74
CMS counts 2,463 Medicare patients who saw Dr. Armstrong in 2024. The largest group is 65 to 74, with 1,017 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 25% are also on Medicaid. Their average risk score is 2.04, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Armstrong's median patient age at 70, with 67% women.
Dr. Armstrong's Medicare patients by age, 2024
Dr. Armstrong's Medicare patients by sex, 2024
- Women1,58064%
- Men88336%
Chronic conditions among Dr. Armstrong's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis58%
- Diabetes40%
- Ischemic heart disease35%
- Chronic kidney disease32%
- Anxiety30%
- Heart failure29%
Share of Medicare patients with each condition. A patient can have several.
Dr. Armstrong's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women67%
- Men32%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. William D. Armstrong wrote 32 Medicare Part D claims in 2024
In 2024, Dr. Armstrong wrote 32 Medicare Part D claims for 12 patients. 100% of them were for generic drugs. CMS names the drug for 30 of them, across 1 drug with 11 or more claims each, at $111 in total drug cost. In 2023, CMS named 26 claims across 2 drugs.
Dr. Armstrong's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 262024: 3015%
Drugs named by CMS: 1 in 2024, 2 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. William D. Armstrong scored 91 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 91 out of 100 for Dr. Armstrong for performance year 2024, reported as part of a group. Dr. Armstrong accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Armstrong's MIPS scores, performance year 2024
- 91of 100Final score
- 95of 100Quality
- 40of 100Improvement Activities
- 75of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. William D. Armstrong received $1,117 in industry payments from 2017 to 2025
CMS Open Payments shows 55 general payments to Dr. Armstrong from 11 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 100% of the total. C. R. Bard, Inc. & Subsidiaries paid the most, $396.
General payments to Dr. Armstrong by program year, 2017 to 2025
Companies that paid Dr. Armstrong the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. William D. Armstrong graduated from West Virginia School of Osteopathic Medicine
Dr. Armstrong graduated from West Virginia School of Osteopathic Medicine in 1987.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. William D. Armstrong's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. William D. Armstrong
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. William D. Armstrong's NPI number?
Dr. William D. Armstrong's NPI number is 1770564411. It was assigned on November 9, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. William D. Armstrong?
Dr. William D. Armstrong is a diagnostic radiologist in Vicksburg, Mississippi. The primary specialty in the NPI Registry is Diagnostic Radiology Physician (taxonomy code 2085R0202X).
Where does Dr. William D. Armstrong practice?
Dr. Armstrong practices at 2100 Hwy 61 N, Vicksburg, MS 39183. Dr. Armstrong's primary practice is Merit Health River Region in Vicksburg, Mississippi, part of Community Health Systems. Dmand AI also links Dr. Armstrong to 2 hospitals, 1 group practice or clinic and 1 medical group.
What is Dr. William D. Armstrong's office phone number?
The practice phone on file for Dr. Armstrong is (601) 883-5000.
What is Dr. William D. Armstrong's medical license number?
Dr. Armstrong holds Mississippi license 13721.
Which hospitals is Dr. William D. Armstrong affiliated with?
Dr. Armstrong practices at Merit Health River Region in Vicksburg, Mississippi. Dr. Armstrong is also affiliated with FMOL Health | St. Dominic. Dmand AI links Dr. Armstrong to 2 more hospitals.
What medical group is Dr. William D. Armstrong part of?
Dr. Armstrong is linked to Lakeland Radiologists, P.A. Dmand AI links Dr. Armstrong to 1 more medical group.
Does Dr. William D. Armstrong accept Medicare?
Yes. CMS data shows Dr. Armstrong billed Medicare for 3,120 services in 2024, and Dr. Armstrong accepts Medicare assignment.
What is Dr. William D. Armstrong's MIPS score?
Dr. Armstrong's MIPS final score for performance year 2024 is 91 out of 100, reported as part of a group.
How many Medicare patients does Dr. William D. Armstrong see?
CMS counts 2,463 Medicare patients who saw Dr. Armstrong in 2024, with an average age of 74.
Show 5 more questionsShow fewer questions
What services does Dr. William D. Armstrong bill to Medicare?
In 2024, Dr. Armstrong's most billed Medicare services were diagnostic imaging (71045), radiation oncology (77063) and radiation oncology (77067).
Where did Dr. William D. Armstrong go to medical school?
Dr. Armstrong graduated from West Virginia School of Osteopathic Medicine in 1987.
What drugs does Dr. William D. Armstrong prescribe most?
In 2024 Medicare Part D data, Dr. Armstrong's most prescribed drugs by claims were Clopidogrel.
Has Dr. William D. Armstrong received payments from drug or device companies?
CMS Open Payments shows $1,117 in general payments to Dr. Armstrong from 11 companies from 2017 to 2025. The largest total came from C. R. Bard, Inc. & Subsidiaries.
How long has Dr. William D. Armstrong been practicing?
Dr. Armstrong graduated from medical school in 1987, 39 years ago.
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